<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片 -->
    <el-card>
      <!-- 提示 -->
      <el-alert
        title="添加商品信息"
        type="info"
        show-icon
        center
        :closable="false"
      >
      </el-alert>
      <!-- 进度条 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- form -->
      <el-form
        ref="addFormRef"
        :model="addForm"
        :rules="addFormRules"
        label-width="100px"
        label-position="top"
      >
        <!-- tabs -->
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane name="0" label="基本信息">
            <el-form-item label="商品名称 :" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格 :" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量 :" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量 :" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类 :" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="{
                  expandTrigger: 'hover',
                  label: 'cat_name',
                  value: 'cat_id',
                  children: 'children',
                }"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane name="1" label="商品参数">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableDate"
              :key="item.attr_id"
            >
              <!-- 复选框 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane name="2" label="商品属性">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableDate"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane name="3" label="商品图片">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>

          <el-tab-pane name="4" label="商品内容">
            <!-- 富文本 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" style="margin-top: 15px" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>

          <el-tab-pane name="5" label="完成">完成</el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览框 -->
    <el-dialog title="图片预览框" :visible.sync="previewVisible" width="50%">
      <img :src="previewPath" alt="" width="100%" />
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash"
export default {
  data() {
    return {
      catelist: [],
      activeIndex: "0",
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [1, 3, 6],
        pics: [],
        goods_introduce: "",
        attrs: [],
      },
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [{ required: true, message: "请选择分类", trigger: "blur" }],
      },
      manyTableDate: [],
      onlyTableDate: [],
      uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
      headerObj: {
        authorization: window.sessionStorage.getItem("token"),
      },
      previewPath: "",
      previewVisible: false,
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories")
      if (res.meta.status !== 200) {
        return this.$message.error("请求失败")
      }
      this.catelist = res.data
      //   console.log(this.catelist)
    },
    handleChange() {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName == 0 && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择正确的商品分类")
        return false
      }
    },
    async tabClicked() {
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error("请求失败")
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ")
        })
        this.manyTableDate = res.data
        console.log(this.manyTableDate)
      } else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error("请求失败")
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.onlyTableDate = res.data
        console.log(this.onlyTableDate)
      }
    },
    handlePreview(file) {
      this.previewPath = file.response.data.url
      this.previewVisible = true
    },
    handleRemove(file) {
      console.log(file)
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex((x) => x.pic === filePath)
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    handleSuccess(response) {
      // console.log(response);
      const picInfo = response.data.tmp_path
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    add() {
      // console.log(this.addForm);
      // 表单验证
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error("请填写正确的表单")
        }
        // 转字符串cloneDeep()
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(",")
        // 处理动态参数
        this.manyTableDate.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(",")
          }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态属性
        this.onlyTableDate.forEach((item) => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals}
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        console.log(form)
        //   添加商品请求
        const { data: res } = await this.$http.post("goods", form)
        if (res.meta.status !== 201) {
          return this.$message.error("添加失败")
        }
        this.$message.success("添加成功")
        this.$router.push("/goods")
      })
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>

<style lang="less" scoped>
.el-cascader {
  width: 180px;
}
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
</style>